Since Yudu emulsion sheets are way too expensive, I've looked for alternatives. Liquid emulsion will only last in the fridge for about 4 months once it's mixed, so it doesn't look particularly cheap unless you do a lot of silk screening. I do all types of crafts, so I know I wouldn't use the liquid up. I've seen other sheets that are a lot cheaper than the Yudu's which are red and a couple of microns thinner than the green. Has anyone used these and, if so, what do you think? If a packet of 10 sheets will last 4-6 months in black packaging, it may be the cheapest way for a hobbyist to go IF it actually works. Any thoughts?